﻿//-----------------------------------------------------------------------
// <copyright file="StartUriCommand.cs" company="AFS">
// Copyright (c) AFS. All rights reserved.
//
//    This file is part of Chatbox.
//
//    Chatbox is free software: you can redistribute it and/or modify
//    it under the terms of the GNU Lesser General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    any later version.
//
//    Chatbox is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//    GNU Lesser General Public License for more details.
//
//    You should have received a copy of the GNU Lesser General Public License
//    along with Chatbox. If not, see http://www.gnu.org/copyleft/lesser.html
// </copyright>
//----------------------------------------------------------------------- 

namespace ChatBox.UI.Commands
{
    using System;
    using System.Diagnostics;

    using ChatBox.Interfaces;

    /// <summary>
    /// Command to launch a Uri
    /// </summary>
    public class StartUriCommand : GenericCommandBase<Uri>
    {
        /// <summary>
        /// Log destination
        /// </summary>
        private readonly ILogger log;

        /// <summary>
        /// Initializes a new instance of the StartUriCommand class
        /// </summary>
        /// <param name="log">the error log</param>
        public StartUriCommand(ILogger log)
        {
            this.log = log;
        }

        /// <summary>
        /// Execute the command
        /// </summary>
        /// <param name="value">the hyperlink to process</param>
        public override void ExecuteOnValue(Uri value)
        {
            try
            {
                Process.Start(value.ToString());        
            }
            catch (Exception ex)
            {
                // browser is wedged. log the failure
                string message = "Click on link " + value + " failed";
                this.log.LogException(message, ex);
            } 
        }

        /// <summary>
        /// Hack to stop it being falsely disabled
        /// </summary>
        /// <param name="parameter">the object to test</param>
        /// <returns>always true</returns>
        public override bool CanExecute(object parameter)
        {
            return true;
        }
    }
}
